This is a video about how to disassemble BlackBerry Z30.
The BlackBerry Z30 replacements are available at: http://www.etradesupply.com/blackberry/bb-10-phone/blackberry-z30.html
If you'd like to DIY repair your broken BlackBerry Z30 screen or other parts, you can follow this video for reference.

This is a video about how to reassemble LG G3.
The LG G3 replacements are available at:http://www.etradesupply.com/lg-g3-d855-lcd-screen-and-digitizer-assembly-white.html
If you'd like to DIY repair your broken LG G3 screen or other parts, you can follow this video for reference.